JPWO2020230680A1 - - Google Patents

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Publication number
JPWO2020230680A1
JPWO2020230680A1 JP2021519388A JP2021519388A JPWO2020230680A1 JP WO2020230680 A1 JPWO2020230680 A1 JP WO2020230680A1 JP 2021519388 A JP2021519388 A JP 2021519388A JP 2021519388 A JP2021519388 A JP 2021519388A JP WO2020230680 A1 JPWO2020230680 A1 JP WO2020230680A1
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JP
Japan
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Granted
Application number
JP2021519388A
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JP7273953B2 (ja
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Priority to JP2023074201A priority Critical patent/JP7496454B2/ja
Application granted granted Critical
Publication of JP7273953B2 publication Critical patent/JP7273953B2/ja
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0075—Magnetic shielding materials
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0045—Mixed oxides or hydroxides containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/004—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using non-directional dissipative particles, e.g. ferrite powders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C01P2004/16—Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2265—Oxides; Hydroxides of metals of iron
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/01—Magnetic additives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • H01F1/348—Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
JP2021519388A 2019-05-14 2020-05-07 電波吸収体 Active JP7273953B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023074201A JP7496454B2 (ja) 2019-05-14 2023-04-28 電波吸収体

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019091319 2019-05-14
JP2019091319 2019-05-14
PCT/JP2020/018479 WO2020230680A1 (ja) 2019-05-14 2020-05-07 電波吸収体

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2023074201A Division JP7496454B2 (ja) 2019-05-14 2023-04-28 電波吸収体

Publications (2)

Publication Number Publication Date
JPWO2020230680A1 true JPWO2020230680A1 (ja) 2020-11-19
JP7273953B2 JP7273953B2 (ja) 2023-05-15

Family

ID=73289104

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2021519388A Active JP7273953B2 (ja) 2019-05-14 2020-05-07 電波吸収体
JP2023074201A Active JP7496454B2 (ja) 2019-05-14 2023-04-28 電波吸収体

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2023074201A Active JP7496454B2 (ja) 2019-05-14 2023-04-28 電波吸収体

Country Status (6)

Country Link
US (1) US20220061198A1 (ja)
EP (1) EP3971245A4 (ja)
JP (2) JP7273953B2 (ja)
KR (1) KR102542810B1 (ja)
CN (1) CN113812221B (ja)
WO (1) WO2020230680A1 (ja)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007180469A (ja) * 2005-12-02 2007-07-12 Dowa Holdings Co Ltd 電波吸収体用磁性粉体およびその製造法並びに電波吸収体
JP2007250823A (ja) * 2006-03-16 2007-09-27 Dowa Holdings Co Ltd 電波吸収体用磁性粉体および製造法並びに電波吸収体
JP2011178654A (ja) * 2010-01-29 2011-09-15 Dowa Electronics Materials Co Ltd 磁気記録用六方晶フェライト磁性粉末及びその製造方法ならびに該粉末を用いた磁気記録媒体

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05206676A (ja) * 1992-01-27 1993-08-13 Nec Corp 電波吸収体
JPH11354972A (ja) * 1998-06-10 1999-12-24 Tdk Corp 電波吸収体
JP4719431B2 (ja) * 2004-06-21 2011-07-06 富士フイルム株式会社 六方晶フェライト磁性粉末、その製造方法および磁気記録媒体
JP5124825B2 (ja) * 2006-09-08 2013-01-23 国立大学法人 東京大学 ε酸化鉄系の磁性材料
JP2010260766A (ja) * 2009-05-07 2010-11-18 Dowa Electronics Materials Co Ltd マグネトプランバイト型六方晶フェライトおよびそれを用いた電波吸収体
WO2010150853A1 (ja) * 2009-06-24 2010-12-29 国立大学法人東京大学 磁性薄膜の製造方法、磁性薄膜及び磁性体
US9162928B2 (en) * 2009-06-30 2015-10-20 Hitachi Metals, Ltd. Method for producing sintered ferrite magnet, and sintered ferrite magnet
EP3248942B1 (en) * 2015-01-22 2021-03-03 Powdertech Co., Ltd. Resin composition containing a hexagonal plate shaped ferrite powder, manufacturing method thereof, and molded product formed from the resin composition
JP2018056492A (ja) 2016-09-30 2018-04-05 マクセルホールディングス株式会社 電波吸収シート
JP6598809B2 (ja) 2017-03-21 2019-10-30 三菱電機株式会社 電波吸収体、その製造方法及び高周波モジュール

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007180469A (ja) * 2005-12-02 2007-07-12 Dowa Holdings Co Ltd 電波吸収体用磁性粉体およびその製造法並びに電波吸収体
JP2007250823A (ja) * 2006-03-16 2007-09-27 Dowa Holdings Co Ltd 電波吸収体用磁性粉体および製造法並びに電波吸収体
JP2011178654A (ja) * 2010-01-29 2011-09-15 Dowa Electronics Materials Co Ltd 磁気記録用六方晶フェライト磁性粉末及びその製造方法ならびに該粉末を用いた磁気記録媒体

Also Published As

Publication number Publication date
EP3971245A4 (en) 2022-07-13
JP2023113607A (ja) 2023-08-16
JP7496454B2 (ja) 2024-06-06
JP7273953B2 (ja) 2023-05-15
KR102542810B1 (ko) 2023-06-14
EP3971245A1 (en) 2022-03-23
CN113812221B (zh) 2024-07-05
CN113812221A (zh) 2021-12-17
KR20210150454A (ko) 2021-12-10
US20220061198A1 (en) 2022-02-24
WO2020230680A1 (ja) 2020-11-19

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